標準號：IEC 60970-2007
中文標準名稱：絕緣液體.粒子計數和大小測定用方法
英文標準名稱：Insulating liquids - Methods for counting and sizing particles
標準類型：K15;E38
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：K15;E38
國際標準分類號：17.220.99;29.040.10
引用標準：IEC 60475;ISO 4406;ISO 4407;ISO 5884;EN 50353
適用范圍：This standard describes the sampling procedures and methods for the determination of particle concentration and size distribution.Three methods are specified. One uses an automatic particle size analyser, working on the light interruption principle.The other two use an optical microscope,in either the transmitted light or incident light mode,to count particles collected on the surface of a membrane filter.The optical microscope methods are described in ISO 4407.All three methods are applicable to both used and unused insulating liquids.Annex A contains an alternative sampling procedure using a syringe and Annex B reports a reference for the calibration of automatic particle counters.